Accumulated Other Comprehensive Loss, Tax (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2022	Apr. 30, 2021
Other Comprehensive Income (Loss), Tax [Abstract]
Cash flow hedges	$ (15)	$ (71)	$ (206)	$ (72)
Pension and other post-retirement benefits	(3)	0	12	246
Other income tax adjustments and currency translation	(87)	372	346	(925)
Income tax (expense) benefit related to items of other comprehensive (loss) income	$ (105)	$ 301	$ 152	$ (751)